DH Instruments AMH-100 User manual

AMH-38™/AMH-100™
Automated Mass Handling System
for PG7000 Piston Gauges
Operation and Maintenance Manual
© 2007 DH Instruments, a Fluke Company

© 2007, DH Instruments, a Fluke Company All rights reserved.
Information in this document is subject to change without notice. No part of this document may be reproduced or transmitted in any
form or by any means, electronic or mechanical, for any purpose, without the express written permission of DH Instruments, a
Fluke Company 4765 East Beautiful Lane Phoenix AZ 85044-5318 USA.
DH Instruments makes every effort to ensure the accuracy and quality of its published materials; however, no warranty, expressed
or implied, is provided. DH Instruments disclaims any responsibility or liability for any direct or indirect damages resulting from the
use of the information in this manual or products described in it. Mention of any product or brand does not constitute an
endorsement by DH Instruments of that product or brand. This manual was originally composed in English and was subsequently
translated into other languages. The fidelity of subsequent translations cannot be guaranteed. In case of conflict between the
English version and another language version, the English version takes precedence.
DH Instruments, DH, DHI, AMH-38, AMH-100, PG7000, PG7xxx are trademarks of DH Instruments, a Fluke Company, registered
and otherwise.
Krytox is a registered trademark of the Dupont de Nemours Company.
Pyrex is a registered trademark of Dow Corning.
Document No. 550133-02
040726
Printed in the USA.
© 2007 DH Instruments, a Fluke Company

TABLE OF CONTENTS
T
TA
AB BL LE E
O
OF
F
C
CO
ON NT TE EN NT TS S
TABLE OF CONTENTS...............................................................I
TABLES.................................................................................III
FIGURES................................................................................III
ABOUT THIS MANUAL ..............................................................V
1. INTRODUCTION .................................................................1
1.1 PRODUCT OVERVIEW ...........................................................................................................................1
1.2 LOCATION AND DESCRIPTION OF THE COMPONENTS....................................................................2
1.2.1 AMH-38 ..........................................................................................................................................................2
1.2.2 AMH-100 ........................................................................................................................................................3
1.3 SPECIFICATIONS ...................................................................................................................................4
2. PREPARATION FOR OPERATION .........................................5
2.1 UNPACKING AND INSPECTION ............................................................................................................5
2.2 SITE REQUIREMENTS............................................................................................................................7
2.2.1 SITE................................................................................................................................................................7
2.2.2 GAS SUPPLIES.............................................................................................................................................7
2.2.2.1 DRIVE AIR SUPPLY ..................................................................................................................................7
2.2.2.2 VACUUM SUPPLY (AMH-38 ONLY) .........................................................................................................8
2.3 SETTING UP THE AMH FOR OPERATION............................................................................................8
2.3.1 GENERAL CONSIDERATIONS.....................................................................................................................9
2.3.2 SETTING UP THE AMH.................................................................................................................................9
2.3.2.1 CONNECTING THE DRIVE AIR SUPPLY.................................................................................................9
2.3.2.2 CONNECTING THE DRIVE VACUUM SUPPLY (AMH-38 ONLY)..........................................................11
2.3.2.3 CONNECTING ELECTRICAL POWER....................................................................................................11
2.3.2.4 CONNECTING PG7000 PLATFORM COMMUNICATIONS....................................................................12
2.3.2.5 CONNECTING A REFERENCE VACUUM SUPPLY (AMH-38 ONLY)....................................................12
2.3.2.6 CONNECTING AN EXTERNAL REFERENCE VACUUM GAUGE (AMH-38 ONLY)..............................13
2.4 PREPARING THE PG7000 PLATFORM...............................................................................................13
2.4.1 PREPARING PG7102, PG7202, PG7302 PLATFORM HARDWARE FOR AMH-100................................13
2.4.2 PREPARING PG7601 PLATFORM HARDWARE FOR AMH-38................................................................13
2.4.3 VERIFYING PG7000 EMBEDDED SOFTWARE VERSION FOR AMH SUPPORT....................................14
2.5 CHECKING THE PG7000 PISTON-CYLINDER MODULES FOR AMH OPERATION..........................14
2.5.1 CHECKING THE PISTON CAP...................................................................................................................14
2.5.2 CHECKING THE PISTON STOP BUSHING ..............................................................................................15
2.6 INSTALLING THE AMH MASS SET......................................................................................................15
2.7 INITIAL START UP/VERIFICATION......................................................................................................17
3. OPERATION..................................................................... 19
3.1 GENERAL OPERATING PRINCIPLES .................................................................................................19
3.2 OPERATION..........................................................................................................................................22
3.2.1 INSTALLING THE AMH MASS HANDLER ON THE PG7000 PLATFORM ...............................................22
3.2.1.1 INSTALLING AMH-38 ..............................................................................................................................23
3.2.1.2 INSTALLING AMH-100 ............................................................................................................................24
3.2.2 REMOVING THE AMH MASS HANDLER FROM THE PG7000 PLATFORM............................................25
3.2.2.1 REMOVING AMH-38................................................................................................................................25
3.2.2.2 REMOVING AMH-100..............................................................................................................................25
3.2.3 REGULAR MASS TO PRESSURE OR PRESSURE TO MASS OPERATION...........................................26
3.2.4 DIRECT CONTROL OF AMH FUNCTIONS ................................................................................................26
Page I © 2007 DH Instruments, a Fluke Company

AMH-38™ AND AMH-100™ OPERATION AND MAINTENANCE MANUAL
3.2.5 MAKING AND BREAKING THE REFERENCE VACUUM (AMH-38 ONLY)...............................................27
3.2.6 ACCESSING THE PG7000 PISTON-CYLINDER MODULE .......................................................................27
3.2.7 INDICATOR LED..........................................................................................................................................27
3.2.8 ERROR MESSAGES ...................................................................................................................................28
4. REMOTE OPERATION ....................................................... 31
4.1 OVERVIEW............................................................................................................................................31
5. MAINTENANCE AND ADJUSTMENTS .................................. 33
5.1 MAINTENANCE.....................................................................................................................................33
6. TROUBLESHOOTING ........................................................ 35
7. WARRANTY STATEMENT .................................................. 37
7.1 WARRANTY STATEMENT....................................................................................................................37
© 2007 DH Instruments, a Fluke Company Page II

TABLES AND FIGURES
T
TA
AB BL LE ES S
Table 1. AHM-38 Parts List..........................................................................................................................5
Table 2. AHM-100 Parts List........................................................................................................................6
Table 3. Drive Air Pressure Requirement by Mass Set...............................................................................7
Table 4. AMH Errors ..................................................................................................................................28
Table 5. AMH Troubleshooting Checklist ..................................................................................................35
Table 6. DHI Authorized Service Providers...............................................................................................37
F
FI
IG GU UR RE ES S
Figure 1. AMH-38 Automated Mass Handler...............................................................................................2
Figure 2. AMH-100 Automated Mass Handler.............................................................................................3
Figure 3. PG7601 Vacuum Plate Detail.....................................................................................................13
Figure 4. Piston Cap Inspection.................................................................................................................15
Figure 5. Piston Cap/Bell Testing ..............................................................................................................15
Figure 6. Piston-Cylinder Module Piston Stop Bushing............................................................................15
Figure 7. AMH Mass Set............................................................................................................................16
Figure 8. AMH Schematic/Operating Principle..........................................................................................21
Figure 9. AMH Installation on PG7000 Platform........................................................................................23
Page III © 2007 DH Instruments, a Fluke Company

AMH-38™ AND AMH-100™ OPERATION AND MAINTENANCE MANUAL
N
NO
OT TE ES S
© 2007 DH Instruments, a Fluke Company Page IV

ABOUT THIS MANUAL
A
AB
BO OU UT T
T
TH
HI IS S
M
MA
AN NU UA AL L
This manual is designed to be used in conjunction with the PG7000 Piston Gauges Manual, to assist in
the set up, operation and maintenance of an AMH-38 or AMH-100 automated mass handling system.
Manual Conventions
(CAUTION) is used in throughout the manual to identify user warnings and cautions.
(NOTE) is used throughout the manual to identify operating and applications advice and
additional explanations.
Page V © 2007 DH Instruments, a Fluke Company

AMH-38™ AND AMH-100™ OPERATION AND MAINTENANCE MANUAL
N
NO
OT TE ES S
© 2007 DH Instruments, a Fluke Company Page VI

1. INTRODUCTION
1
1. .
I
IN
NT TR RO OD DU UC CT TI IO ON N
1.1 PRODUCT OVERVIEW
AMH-38 and AMH-100 are automated mass handling systems for PG7000 piston gauges. The AMH
system allows mass values to be loaded and unloaded automatically in response to mass or pressure
entries from the PG7000 terminal or over the PG7000’s COM1 or IEEE-488 interface.
The AMH system lifts the masses off the PG7000 piston, selects the masses to be loaded, and places the
selected masses back onto the piston. This is accomplished using pneumatic and electrical actuation
hardware.
The AMH must be used with a special AMH mass loading bell and mass set. Manipulation of
conventional manual masses cannot be automated.
Both AMH models are accessories to PG7000 Platforms that can be used with an existing manual system
or delivered as part of a new system. Some older PG7000 Platforms require modification before they can
accept the AMH system. Please consult DHI or your DHI representative to determine if an existing
PG7000 Platform is AMH ready.
AMH-38 is compatible with PG7601 and PG7607 Platforms and handles a mass set of nominally 13, 25
or 38 kg. It includes a vacuum chamber for the establishment of a vacuum reference around the masses
when operating in absolute by vacuum mode.
AMH-100 is compatible with PG7201, PG7202, PG7302 and PG7307 Platforms and handles a mass set
of nominally 40, 60, 80 or 100 kg. It does not include a vacuum chamber so the masses are always in
ambient pressure conditions.
Page 1 © 2007 DH Instruments, a Fluke Company

AMH-38™ AND AMH-100™ OPERATION AND MAINTENANCE MANUAL
1.2 LOCATION AND DESCRIPTION OF THE COMPONENTS
1.2.1 AMH-38
1. KF-40 vacuum connections (2)
2. Lifting handles (2)
3. Mass lifter and pneumatic actuation
solenoid valves
4. Vacuum bell jar (delivered with
PG7601 Platform)
5. AMH status indication LED
6. RS232 Port, COM1
7. DC power connection
8. Drive air pressure connection
9. Drive vacuum connection
Figure 1. AMH-38 Automated Mass Handler
© 2007 DH Instruments, a Fluke Company Page 2

1. INTRODUCTION
1.2.2 AMH-100
1. Platform engagement foot
2. Main mass manipulation column
3. Bubble level
4. Mass lifter and pneumatic
actuation cover
5. Drive air pressure connection
6. RS232 Port, COM1
7. DC power connection
8. AMH status indication LED
Figure 2. AMH-100 Automated Mass Handler
Page 3 © 2007 DH Instruments, a Fluke Company

AMH-38™ AND AMH-100™ OPERATION AND MAINTENANCE MANUAL
1.3 SPECIFICATIONS
Power Requirements:
Operating Temperature:
Dimensions:
AMH-38:
AMH-100:
15 VDC @ 2 A, 30 W max. consumption
15 to 35 ºC
41 cm H x 37 cm W x 38 cm D (16.3 in. x 14.6 in. x 15 in.)
41 cm H x 41 cm W x 36 cm D (16.3 in. x 16.1 in. x 14.1 in.)
Weight:
Communications:
AMH-38:
AMH-100:
18 kg (40 lbs)
12 kg (25 lbs)
RS232 (COM1)
Drive Air Supply: AMH-38:
AMH-100:
275 kPa (40 psi), ± 10%, minimal flow
550 kPa (80 psi), ± 10%, minimal flow
Vacuum Supply: AMH-38 only:
At least 50 kPa (7.5 pi) under atmosphere, minimal flow
Pressure Connections: Pressure:
Vacuum:
Quick connector equivalent to Swagelok QM Series (QM2-B-200),
Use with DESO (double end shut off) type stem
Quick connector equivalent to Swagelok QM Series (QM2-B-200),
Use with SESO (single end shut off) type stem only.
CE conformance: Available, must be specified
Due to a policy of continuous product improvement, all specifications are subject to change
without notice.
© 2007 DH Instruments, a Fluke Company Page 4

2. PREPARATION FOR OPERATION
2
2. .
P
PR
RE EP PA AR RA AT TI IO ON N
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O
OP
PE ER RA AT TI IO ON N
2.1 UNPACKING AND INSPECTION
AMH-38 and AMH-100 are delivered, along with their standard accessories, in a corrugated container
with foam cut outs to hold items in place.
Remove all parts from the shipping box. Be sure not to lose or discard the Accessory Kit.
Inspect all parts for damage. If damage is noted, report it to your Shipping & Receiving Department and
the delivering carrier for appropriate action.
Inspect for any missing components or accessories referring to Table 1 for AMH-38 or Table 2 for AMH-
100. Should any items be missing, contact DHI or your local DHI representative.
Table 1. AHM-38 Parts List
DESCRIPTION PART #
1 ea. AHM-38 Automated Mass Handler 402061 or
402061-CE
Accessory kit including: 402092 or
402092-CE
1 ea. Operation and Maintenance Manual 550133
1 ea. 15 VDC Power Supply 103986
1 ea. Power Cord 100770 or
100770-CE
1 ea. RS232 cable 100847 or
100847-CE
2 m. 1/8 in. PFA tubing 101392-Z
2 m. 1/4 in. PFA tubing 101450-Z
1 ea. Adaptor, 1/8 in. Swage x 1/4 in. NPT M 102189
1 ea. Tee, 1/4 in. Swage 101487
1 ea. Port Connector, 1/4 in. Swage 101984
1 ea. Quick Connector Stem, 1/8 in. Swage DESO (with red band) 402097
1 ea. Assembly: SESO Quick Connector Stem and Valve 402093
4 ea. Cable Tie, Hook and Loop 103485
1 ea. Tool, 3 mm Hex Wrench (with T handle) 103473
1 ea. O-ring, Viton, 2-273 103493
1 ea. Adaptor, 1/4 in. Swage x 1/4 in. NPT M 101477
Page 5 © 2007 DH Instruments, a Fluke Company

AMH-38™ AND AMH-100™ OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 6
Table 2. AHM-100 Parts List
DESCRIPTION PART #
1 ea. AHM-100 Automated Mass Handler 402062 or
402062-CE
Accessory kit including: 402094 or
402094-CE
1 ea. Operation and Maintenance Manual 550133
1 ea. 15 VDC Power Supply 103986
1 ea. Power Cord 100770 or
100770-CE
1 ea. RS232 cable 100847 or
100847-CE
2 m. 1/8 in. PFA tubing 101392-Z
1 ea. Adaptor, 1/8 in. Swage x 1/4 in. NPTM 102189
1 ea. Quick Connector Stem, 1/8 in. Swage DESO (with red band) 402097
4 ea. Cable Tie, Hook and Loop 103485
1 ea. Tool, 3 mm Hex Wrench (with T handle) 103473
1 ea. Tool, 2.5 mm Hex Wrench (with straight handle) 102257
1 ea. Dust Cover 103503

2. PREPARATION FOR OPERATION
2.2 SITE REQUIREMENTS
2.2.1 SITE
General site requirements are the same as for PG7000 piston gauge platforms (see the
PG7000 Operation and Maintenance Manual).
When planning the site for use of AMH, consider that the AMH mass handler will occasionally
be removed from the PG7000 Platform. A convenient place to put it down when it is removed
should be planned. In addition, it is more convenient to leave the pressure, power and other
utilities connected to the AMH when removing it so consider the length and path of these
lines.
2.2.2 GAS SUPPLIES
AMH-38 requires a compressed air source and a vacuum source (see Sections 2.2.2.1,
2.2.2.2).
AMH-100 requires a compressed air source only (see Section 2.2.2.1).
2.2.2.1 DRIVE AIR SUPPLY
The drive air supply provides power to operate the mass lifter and the binary
mass selector pins (see Section 3.1).
Drive air requirements are:
Flow rate: Very low, avoid restrictions or excessive length of connecting
tubing
Cleanliness: If air from a compressor is used it should be filtered and dried,
preferably with a filter regulator with a coalescing filter. The
recommendation is for a 5-micron filter upstream of a 0.01-micron
coalescing filter. The main concern is the elimination of humidity,
which could corrode the AMH pneumatic controls.
Drive air pressures required (± 10%) for different mass sets are listed in Table 3:
Table 3. Drive Air Pressure Requirement by Mass Set
MODEL MASS SET DRIVE AIR
[kPa (psi)]
AMH-38 MS-AMH-13 275 (40)
AMH-38 MS-AMH-25 275 (40)
AMH-38 MS-AMH-38 275 (40)
AMH-100 MS-AMH-40 275 (40)
AMH-100 MS-AMH-60 380 (55)
AMH-100 MS-AMH-80 450 (65)
AMH-100 MS-AMH-100 550 (80)
Do not operate AMH with drive pressure lower than 275 kPa (40 psi).
Damage to the AMH could result.
Page 7 © 2007 DH Instruments, a Fluke Company

AMH-38™ AND AMH-100™ OPERATION AND MAINTENANCE MANUAL
2.2.2.2 VACUUM SUPPLY (AMH-38 ONLY)
The vacuum supply is necessary for AMH-38 operation when there is vacuum in
the AMH-38 vacuum chamber and bell jar (absolute by vacuum mode PG7601
operation). The vacuum supply assures that the binary mass selection pins
remain in the correct position and evacuates internal AMH volumes to minimize
the likelihood of leaks into the reference vacuum.
The vacuum pump or vacuum supply for the pressure controller of the PG7601
system can be used for the AMH-38 vacuum supply.
Vacuum drive requirements are:
Flow rate: Very low, avoid restrictions or excessive length of connecting
tubing
Vacuum pressure: At least 50 kPa (7.5 pi) under atmosphere
Do not operate AMH-38 when using a PG7601 in “absolute by vacuum” mode
without having a vacuum supply connected to AMH-38. Always check that
AMH-38 is supplied with vacuum before establishing reference vacuum in the
AMH-38 vacuum chamber. Failure to do so may result in damage to the
binary mass pins and/or binary masses.
Do not plug the AMH drive vacuum connection. Use only a “SESO” type
quick-connector stem. Plugging the AMH drive vacuum connection will cause
serious damage to AMH internal components.
© 2007 DH Instruments, a Fluke Company Page 8

2. PREPARATION FOR OPERATION
2.3 SETTING UP THE AMH FOR OPERATION
2.3.1 GENERAL CONSIDERATIONS
AMH-100 requires only three connections: drive air supply, electrical power, and RS232
cable for communications with PG7000 Platform. Consider these connections when setting
up the AMH-100.
AMH-38 requires at least three connections: drive air supply, electrical power, and RS232
cable for communications with PG7000 Platform. If the PG7000 on which the AMH-38 is
installed will be operated with a vacuum in the vacuum chamber, a drive vacuum connection
is also required. AMH-38 includes two KF40 connections that may be used for connection of
a vacuum pump and/or of an external vacuum gauge.
The AMH mass handler is removed from the PG7000 Platform to access the piston-cylinder.
Ease of removal and manipulation of the AMH should be considered in making the various
utility connections. In addition, a safe and convenient location to put it down when it is
removed should be planned.
2.3.2 SETTING UP THE AMH
To setup the AMH for operation, place the AMH bottom down on a sturdy, flat surface. Do
not install it on the PG7000 Platform until the AMH mass set has been installed and the AMH
itself has been it has been started up (see Section 2.7).
The setup of the AMH can be broken down into 6 steps:
•Connecting the drive air supply (see Section 2.3.2.1)
•Connecting the drive vacuum supply (AMH-38 only) (see Section 2.3.2.2)
•Connecting electrical power (see Section 2.3.2.3)
•Connecting PG7000 Platform communications (see Section 2.3.2.4).
•Connecting the reference vacuum supply (AMH-38 only) (see Section 2.3.2.5)
•Connecting an external vacuum gauge (AMH-38 only) (see Section 2.3.2.6).
There are two KF-40 pass throughs on the rear of the AMH-38 vacuum chamber for
electrical and pressure connections to the inside of the chamber. These are not intended
to be loosened or removed by the user. Only qualified service personnel should loosen the
KF- 40 pass through connections on the AMH-38 vacuum chamber.
2.3.2.1 CONNECTING THE DRIVE AIR SUPPLY
The AMH accessories kit includes hardware to facilitate the connection of the drive
air supply (see Tables 1, 2). Locate the drive air connection accessories including:
•Quick-connector stem (DESO type with red band).
•2 m 1/8 in. O.D. clear PFA tubing.
•1/8 in. Swage x 1/4 in. NPT M adaptor.
Page 9 © 2007 DH Instruments, a Fluke Company

AMH-38™ AND AMH-100™ OPERATION AND MAINTENANCE MANUAL
To use the supplied accessories to make the AMH drive air supply connection
proceed as follows:
Connect the quick-connector to one end of the PFA tube. Loosen the 1/8 in.
Swage nut on the assembly slightly. Slip the PFA tube into the nut until it
stops. Tighten the nut to swage the tube.
Connect the other end of the PFA tube to an appropriate drive air supply (see
Section 2.2.2.1). If desired, use the 1/8 in. Swage x 1/4 in. NPT M adaptor.
Insert the quick-connector stem into the drive air connection quick-connector
(top connector, color coded with red band). Press firmly until the stem clicks
into place.
Apply drive air pressure to the connection and check for leaks.
The quick-connector stem seals when disconnected so the drive air supply
may be applied before the quick-connector stem is inserted into the quick-
connector.
Do not operate AMH with drive pressure lower than 275 kPa (40 psi).
Damage to the AMH could result.
© 2007 DH Instruments, a Fluke Company Page 10

2. PREPARATION FOR OPERATION
2.3.2.2 CONNECTING THE DRIVE VACUUM SUPPLY
(AMH-38 ONLY)
The AMH-38 accessories kit includes hardware to facilitate the connection of the
drive vacuum supply (see Table 1). Locate the drive vacuum connection
accessories including:
•Quick-connector stem (with blue band) and three way sleeve valve assembly.
•2 m 1/4 in. O.D. PFA tubing.
•1/4 in. Swage x 1/4 in. NPT M adaptor.
•1/4 in. Swage tee and 1/4 in. Swage Port Connector.
To use the supplied accessories to make the AMH drive vacuum supply
connection proceed as follows:
Connect the blue banded quick-connector/sleeve valve assembly to one end
of the PFA tube. Loosen the 1/4 in. Swage nut on the assembly slightly. Slip
the PFA tube into the nut until it stops. Tighten the nut to swage the tube.
Connect the other end of the PFA tube to an appropriate vacuum supply (see
Section 2.2.2.2). If desired, use the 1/4 in. Swage x 1/4 in. NPT M adaptor
and/or the 1/4 in. Swage Tee and Port Connector. The Tee and Port
Connector are particularly useful if the vacuum supply is from a DHI
PPC/MPC Vacuum Kit. Install the Tee on the vacuum pump side of the PFA
tube between the vacuum pump and the PPC or MPC, or where the vacuum
tube connects to the PPC or MPC.
Insert the quick-connector stem into the drive vacuum connection quick-
connector (color coded with blue band). Press firmly until the stem clicks
into place. Use only a “SESO” type stem (not self sealing).
Check that the three-way sleeve valve is in the GAUGE position (drive
vacuum not applied to the AMH-38). Apply drive vacuum and check for
leaks.
Do not plug the AMH drive vacuum connection. Use only a “SESO” type
quick-connector stem. Plugging the AMH drive vacuum connection will cause
serious damage to AMH internal components.
A drive vacuum supply must be connected to AMH-38 when using a PG7601
in “absolute by vacuum” mode. Always check that AMH-38 is supplied with
drive vacuum before establishing reference vacuum in the AMH-38 vacuum
chamber. Failure to do so may result in damage to the binary mass pins
and/or binary masses.
2.3.2.3 CONNECTING ELECTRICAL POWER
Connect the electrical power to the power connector on the AMH. Use the
supply pack provided in the AMH accessories. Power supply to the pack is 100 –
240V, 50/60 Hz.
When power is connected, the green LED near the electrical connector should
light and not flash. If the LED flashes, see Section 3.2.7. If the LED doesn’t
light, and you are sure power is connected, contact your DHI Authorized Service
Provider.
Page 11 © 2007 DH Instruments, a Fluke Company

AMH-38™ AND AMH-100™ OPERATION AND MAINTENANCE MANUAL
2.3.2.4 CONNECTING PG7000 PLATFORM COMMUNICATIONS
Locate the 9 pin D-sub cable delivered with the AMH accessories.
The communications connection configuration depends upon whether the
PG7000 is being used with a PPC automated pressure controller.
AMH Communications Connection Without a PPC Automated Pressure
Controller
Connect the female end of the 9 pin D-sub cable to the AMH COM1 port.
Connect the male end of the 9 pin D-sub cable to the PG7000 COM3 port.
Set the PG7000 COM3 port to (see the PG7000 Operation and Maintenance
Manual):
−Baud rate: 9600
−Parity: None
−Data bits: 8
−Stop bits: 1
AMH Communications Connection With a PPC Automated Pressure
Controller
The AMH shares PG7000 COM3 with the PPC automated pressure controller.
Connect the female end of the 9 pin D-sub cable to the AMH COM1 port.
Connect the male end of the 9 pin D-sub cable to the PPC COM2 port.
Set the PPC COM2 port to (see the PG7000 Operation and Maintenance
Manual):
−Baud rate: 9600
−Parity: None
−Data bits: 8
−Stop bits: 1
Use another 9 pin D-sub cable to connect the PPC3 COM1 port to the PG7000
COM3 port.
Be sure that the COM3 port of the PG7000 Platform and the COM1 port of the
PPC have the same COM settings (see the PG7000 Operation and Maintenance
Manual).
2.3.2.5 CONNECTING A REFERENCE VACUUM SUPPLY
(AMH-38 ONLY)
The AMH-38 vacuum chamber is equipped with two KF-40 vacuum connections.
One of these may be used as an alternate to the KF-25 connection built-in to the
PG7601 platform (see the PG7000 Operation and Maintenance Manual). This
may be desirable when a very low reference vacuum is desired, for example
when using a turbo molecular pump.
To use the KF-40 connection on the AMH-38 for the vacuum reference supply,
use a KF-40 vacuum hose. Plug the platform’s KF-25 connection. Consider the
need to shut-off the vacuum supply when vacuum is not desired in the vacuum
chamber and the need to remove the AMH-38 from the PG7601 Platform to
access the piston-cylinder module or the mass set.
© 2007 DH Instruments, a Fluke Company Page 12